Brentford received loan bids for Onyeka.
Frank Onyeka, a Super Eagles midfielder, has several suitors in Spain, Italy, and Russia as he seeks to leave Premier League team Brentford.
Onyeka plans to depart the Bees this summer in pursuit of consistent playing time.
Valencia, Real Valladolid, and Las Palmas are among the Spanish clubs interested in loaning him.
Brentford is also unhappy with the trio's offer to pay a percentage of his wage.
Leece, a Serie A team, is also interested in loaning him.
Brentford will only approve a permanent transfer for the Nigerian international.
Onyeka has three years left on his Brentford deal.